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Biomedical subjects

K N Barker

Publications and source records attributed to K N Barker.

At least 19 recordsLinked to original sources
PubMed1996

Re-engineering a pharmacy work system and layout to facilitate patient counseling.

The development and evaluation of a new work system and facility design for a chain of community pharmacies are described. A new work system was developed to optimize utilization of pharmacist and technician time and allow the pharmacy to increase patient counseling without adding personnel. In the new system, pharmacists would review prescriptions, check technicians' work, and dispense prescriptions, counseling patients as needed; technicians would enter prescriptions into the pharmacy computer and fill them. The existing work system and design were evaluated in June and July of 1992 by observing, classifying, and recording activities of pharmacy personnel three days per week at six pharmacies in the chain. Pharmacy designs that would work with the new work system were created by a university design class after consultation with representatives of the pharmacy chain and the university's college of pharmacy. The pharmacy chain selected one design, and a detailed floor plan and specifications were created. To test how the new design and system would work at each of the six test pharmacies, a computer simulation program was developed and verified by using the data collected on the existing pharmacy operations. Computer simulation showed that, with the new design and system, increasing patient counseling would increase patient waiting time slightly but would not require additional personnel. The layout and work system in a chain of community pharmacies were redesigned to facilitate patient counseling and make the best use of employee time.

Community Pharmacy Services↗
PubMed1996

Technology and automation in pharmaceutical care.

Pharmacy computer systems in the future will help pharmacists assess patients' medication needs, evaluate drug therapy, and manage patient information. Technology companies are developing systems for automatic dispensing and for distributing medications from nurses' stations in hospitals and long-term care facilities. Bar codes are being used in medication dispensing, verifying prescriptions, selecting patient brochures, and screening for drug interactions. Pharmacies in the future will rely on information networks to store, manage, and communicate patient information. Drug use review databases offer highly developed drug therapy screening.

Humans↗
PubMed1996

Relationships between ambient sounds and the accuracy of pharmacists' prescription-filling performance.

Associations between ambient sounds and accuracy of pharmacists' prescription-filling performance in a pharmacy was studied. Pharmacists were videotaped as they filled prescriptions each workday for 23 days. Each filled prescription was inspected by the investigator. Deviations from the physician's written order were considered errors. Videotape analysis was used to detect unpredictable, predictable, uncontrollable, and controllable sounds. A within-subjects case control study design was employed to determine whether the frequency of ambient sounds was significantly different when prescriptions with errors, compared with those without errors, were filled. Loudness, in terms of equivalent sound levels (Leq) for each half hour, was analyzed for a relationship to dispensing error rate. A mean dispensing error rate of 3.23% was found. Unpredictable sounds, controllable sounds, and noise had a significant effect on pharmacists which resulted in a decreased dispensing error rate. These results suggest that the quality of pharmacists' performance is not adversely affected by ambient sound. As equivalent sound levels increased, the error rate increased to a point, then decreased.

Case-Control Studies↗
PubMed1995

Comparison of medication errors in an American and a British hospital.

Medication errors in a hospital in the United States and a hospital in the United Kingdom were compared. The study was conducted in wards with a high oral-drug-related workload in two large university hospitals. The U.S. hospital was studied in August 1993 and the U.K. hospital in May and June 1993. The U.S. hospital had a typical unit dose drug distribution system, and the U.K. hospital had the ward-based system commonly used in that country, in which a pharmacist visits each ward several times daily and reviews each patient's medication chart. The medication chart is used by the physician to order drugs and obviates the need for transcription of orders. A disguised-observation technique was used to determine frequencies and types of medication errors. Medication errors were identified retrospectively in the U.S. hospital by comparing the observer's notes with the original drug orders made in the patient's chart by the physician. In the U.K. hospital, identification of errors took place concurrently; as doses were administered, they were compared with the orders on the medication chart. In the U.S. and U.K. hospitals, 919 and 2756 opportunities for error were observed, respectively. The medication error rate in the U.S. hospital was 6.9% (95% confidence interval [CI], 5.2% to 8.5%), significantly higher than the 3.0% rate observed in the U.K. hospital (95% CI, 2.4% to 3.7%) (95% CI for the difference, 2.1% to 5.7%). Omitted doses and incorrect doses were the most common types of errors in the U.K. hospital; incorrect doses and unordered doses were the most common types in the U.S. hospital. An American hospital with a unit dose distribution system had a significantly higher medication error rate than a British hospital with a ward-based supply system.

Hospitals, University↗
PubMed1995

Design and evaluation of a sterile compounding facility.

The design and evaluation of a sterile compounding center for a large community teaching hospital are described. The new sterile products area was redesigned to improve efficiency by minimizing staff travel and to incorporate recommendations of the ASHP Technical Assistance Bulletin on Quality Assurance for Pharmacy-prepared Sterile Products. The design approach combined strategic planning with master facilities planning. The process began with a systems analysis, followed by the development of a functional program (a comprehensive list of design specifications). Travel studies were performed before and after renovation to determine gains in efficiency; technician travel decreased 29% and pharmacist travel, 42%. The new facility design met the specifications in the functional program and appeared to comply with all recommendations in the ASHP document for all risk levels of preparations.

Drug Compounding↗
PubMed1995

Dispensing errors and counseling in community practice.

A disguised-patient technique was used to study the nature and frequency of dispensing errors and quality of patient medication counseling in 100 randomly selected community pharmacies. Analysis of 100 prescription orders dispensed detected 24 dispensing errors, of which 4 were clinically significant. Oral counseling was provided to 64 of the patients, covering an average of 3 of the 14 categories of drug information that the Omnibus Budget Reconciliation Act of 1990 (OBRA '90) requires pharmacists to consider when counseling Medicaid patients. In addition to prescriber's label instructions, pharmacists provided written counseling information, including auxiliary labels and receipts, to 98% of the patients, but it covered only an average of six OBRA '90 categories. The results suggest that problems with the quality of community pharmacy medication counseling and dispensing accuracy require immediate attention.

Adult↗
PubMed1991

Illumination and errors in dispensing.

The relationship between the level of illumination and the prescription-dispensing error rate in a high-volume Army outpatient pharmacy was investigated. The prescription error rate was determined by direct, undisguised observation and retrospective prescription review under three levels of illumination (45, 102, and 146 foot-candles) during 21 consecutive weekdays. Illumination was controlled in the prescription-checking area of the pharmacy by using additional fluorescent lamps and filters. The three levels of illumination were randomly assigned to the 21 days to provide a total of 7 days of observations per level. The final sample consisted of 10,888 prescriptions dispensed by five pharmacists. The overall prescription error rate (including both content and labeling errors) was 3.39% (369 prescriptions). An illumination level of 146 foot-candles was associated with a significantly lower error rate (2.6%) than the baseline level of 45 foot-candles (3.8%). There was a linear relationship between each pharmacist's error rate and that pharmacist's corresponding daily prescription workload for all three illumination levels. The effect of the observer was minimal. The rate of prescription-dispensing errors was associated with the level of illumination. Ergonomics can affect the performance of professional tasks.

Ambulatory Care↗
PubMed1990

Fundamentals of medication error research.

Types of medication errors are defined, error detection techniques are described, and the validity of several medication error studies is evaluated. A medication error is generally defined as a deviation from the physician's medication order as written on the patient's chart. In hospitals, medication errors occur at a rate of about one per patient per day. A dispensing error is one made by pharmacy staff when distributing medications to nursing units or directly to patients in an ambulatory-care pharmacy; the error rates for doses dispensed via the cart-filling process range from 0.87% to 2.9%. Categories of medication errors should be operationally defined before an investigation, and any allowable deviations from the physician's order should be clearly stated. Fourteen error category definitions are presented. Methods for detecting medication errors include anonymous self-reports (questionnaires), incident reports, the critical-incident technique (analyses of a large number of individual errors to identify common causal factors), and direct observation (including the disguised-observation and participant observer techniques). Observation is the best error detection method in terms of accuracy. Results of medication error studies were examined for validity and classified into one of four categories: (A) results should be accepted as reported, (B) results overestimate or underestimate the truth by a known amount, (C) results overestimate the truth by an unknown amount, and (D) results should not be accepted. All studies examined for validity used observation as the error detection technique. The following guidelines for observation-based medication error studies were established: The observer should follow the subject to the patient's bedside, the observer should witness patient consumption of each dose, the observer should not be familiar with patient drug regimens before observation, operational definitions must be used, and having an error validation committee can be advantageous. Future studies are needed that focus on the identification and testing of new error prevention methods that use the techniques described.

Data Collection↗
PubMed1988

Effects of simulated facility-design changes on outpatient pharmacy efficiency.

The potential effects of using the Baker drug counter or the Systamodule pharmacy fixture, or both, on the efficiency of the current outpatient pharmacy system at the National Institutes of Health were evaluated by computer simulation. It was hypothesized that the use of these two devices would reduce (1) the prescription-filling time (RxFT) and (2) the distance traveled (DT) by pharmacists in filling individual prescriptions. The sample used was 20% of two weeks' prescriptions, randomly selected. All theoretical estimations of RxFT were done by a computer program; DT was calculated based on measurements from the architect's schematic drawings. The effect of the application of the Baker drug counter alone, the Systamodule pharmacy fixture alone, and the Baker drug counter in combination with the Systamodule pharmacy fixture was to reduce the prescription-filling time by 0.123, 0.159, and 0.280 minutes per prescription, respectively. The average DT per prescription, 102 feet, was identical in the current NIH pharmacy and with use of the Baker counter. It was reduced by 86.3% (to 14 feet) with use of the Systamodule feature, both alone and in combination with the Baker counter. The use of the Baker drug counter and the Systamodule together promises improved efficiency of the prescription dispensing operation.

Computer Simulation↗
PubMed1988

Quality and comprehensiveness of the National Drug Code Directory on magnetic tape.

The quality and comprehensiveness of the FDA's National Drug Code Directory (NDCD) in magnetic tape form was evaluated. The internal quality of the tape was measured by performing cross-checks of the four record types found on the tape and by checking for the presence of "illegal" characters. The comprehensiveness of the tape was evaluated by determining the extent to which a sample of items from nine community and hospital pharmacies could be matched with code numbers on the NDCD tape. A second test of comprehensiveness measured the match rate between the shelf stock sample and National Drug Code (NDC) numbers in a magnetic tape supplied by a regional wholesaler. External quality was measured by comparing the NDC numbers on the containers of items from the shelf sample with the corresponding information in the NDCD tape. More than 300 discrepancies among the four types of records were discovered, and more than 100 "illegal" characters were present in each of the four record types. Matches on the NDCD tape could be found for 80% of the items in the shelf stock sample and 69.5% of the items in the tape supplied by the wholesaler. A total of 156 errors were discovered when the codes on containers in the shelf sample were matched with the NDCD tape information, yielding an error rate of 6.5%. Because of the 6.5% error rate, the usefulness of the NDCD tape is questionable. Since only 80% of an off-the-shelf sample of drugs had matches on the NDCD tape, about 20% of drug products would have to be matched with some other information source. How these figures for the NDCD tape compare with figures for proprietary tapes is not known.

Drug Information Services↗
PubMed1987

Hospital diversification: bibliography on pharmaceutical services.

A pharmacy diversification bibliography is presented. The bibliography includes a selection of references to descriptive reports, research papers, editorials, letters, and commentaries on diversified pharmaceutical services. This bibliography represents important literature from the past 12 years on diversification strategies as well as specific diversified services. For additional information, references have also been included to articles that suggest opportunities for diversification, describe pharmacists' roles in specific services, discuss legal or reimbursement aspects of a service, or could be used to help justify the implementation of a service or "sell' a service to hospital administrators or consumers. The bibliography can be helpful to pharmacy managers and clinicians who are interested in becoming involved in diversification of pharmaceutical services.

Bibliographies as Topic↗
PubMed1986

National survey of hospital pharmacy facilities: introduction.

This paper introduces three articles that report results of a national survey of hospital pharmacy facilities conducted in July 1982. A historical perspective of pharmacists' involvement in facilities planning and examples of internal and external factors influencing the optimal design of hospital pharmacies are presented. The survey aimed to identify and describe existing hospital pharmacy facilities, the adequacy of existing facilities, the anticipated need for facilities, and the processes used for planning facilities. These baseline data can be used in the future as a starting point for developing updated model plans for hospital pharmacies and recommending improvements in the planning process.

Data Collection↗
PubMed1986

National survey of hospital pharmacy facilities: planning and design experience.

Recent major renovation or construction programs of hospital pharmacy facilities and pharmacists' involvement in the planning process for those new facilities are described. A 12-page questionnaire was sent in July 1982 to the chief pharmacists in a random sample of 1846 hospitals in the United States stratified by 10 hospital types. The percentage of hospitals of each type involved in an ongoing or recent (within the preceding 10 years) major renovation or construction project of all or part of the pharmacy was determined. Of those respondents having an ongoing or recent major project, the extent and timing of pharmacists' involvement in the planning process were determined for hospitals of each type. The response rate was 45.6%, and the respondents were representative of the population. Thirty percent of all hospitals had not altered their pharmacy facilities within the preceding 10 years. Nonprofit general medical-surgical hospitals and federal hospitals had the highest percentages of recent projects (78% and 79%, respectively); projects were more likely to involve a new pharmacy facility than remodeling. In 1982, 27% of all respondents had a major pharmacy facilities project under way. Of respondents with an ongoing or recent project, 38% were asked to propose needs for new pharmacy facilities, 45% served on the planning team, and 20% anticipated the need for new facilities; space and location were predetermined without pharmacist involvement in 25% of all cases. Two percent of the respondents had no notice of the deadline for finalizing plans for the new facilities; 22% had one to six months' notice, and 48% had over a year.(ABSTRACT TRUNCATED AT 250 WORDS)

Data Collection↗
PubMed1986

National survey of hospital pharmacy facilities: space allocations and functions.

Space allocations for hospital pharmacies and the demand on these facilities in terms of the external environment and functions performed are described. A 12-page questionnaire was sent in July 1982 to the chief pharmacists in a random sample of 1846 hospitals in the United States stratified by 10 hospital types. The respondents in each hospital type were categorized by variables characterizing the external environment. The mean total amount of existing pharmacy space was computed for hospitals categorized by type and number of beds, and the mean space per bed in nonprofit, for-profit, and government (federal and nonfederal) hospitals was compared. The mean space for specific pharmacy functions was determined. The response rate was 45.6%, and the respondents were representative of the population. The majority of all hospitals served only one building (67%) and had no teaching affiliation agreement (63%). Forty-eight percent of the hospitals administered medications using medication nurses; another 48% used primary or team nursing. There was little relationship between the number of beds and total space allocated for pharmacy facilities. Pharmacies had a mean of 6.9, 5.0, 7.0, and 10.6 gross square feet per bed, respectively, in nonprofit, for-profit, nonfederal government, and federal government hospitals. Space for selected pharmacy functions in the three types of general medical-surgical short-term hospitals are described. Further studies examining the relationships between space and other variables described in this article are needed to explain apparent differences in the amount of space allocated to the pharmacy department among hospital types.

Hospital Bed Capacity↗
PubMed1986

National survey of hospital pharmacy facilities: adequacy of facilities and changes planned.

The adequacy of existing space allocations for hospital pharmacy facilities and planned changes are described. A 12-page questionnaire was sent in July 1982 to the chief pharmacists in a random sample of 1846 hospitals in the United States stratified by 10 hospital types. The respondents in each hospital type and size were categorized by their perceived adequacy of existing space for pharmacy facilities and their plans for adding pharmacy functions and staff. Changes in pharmacy facilities that would improve pharmaceutical services were identified, as were planned changes in facilities. The amount of proposed space approved and not approved for pharmacies in hospitals of each type were determined. The response rate was 45.6%, and the respondents were representative of the population. Forty-nine percent of the respondents reported having adequate space. Only 35% of the respondents indicated that no changes could be made in facilities to improve pharmaceutical services. Forty-one percent of respondents planned one or more changes of some kind in pharmacy facilities; this ranged from 14% for long-term, nonprofit hospitals to 50% for long-term, for-profit hospitals. Sixty-six (8%) of the 843 hospitals had additional floor space approved and funded for the pharmacy; 71% had proposed space that was not approved. Sixty-three percent of all respondents planned new pharmaceutical functions; 56% and 42% planned an increase and no change, respectively, in the number of pharmacy staff members. Adding more space may be one way to improve hospital pharmacy facilities, but more attention also should be directed toward better use of existing space, equipment, and fixtures.

Data Collection↗